Table 2.

Multivariable Logistic Regression of Postoperative Improvement (n = 149)

Variable	Improvement: CCOS ≥13		Improvement: CCOS ≥14
	Odds Ratio [95% CI]	P Value	Odds Ratio [95% CI]	P Value
ED visit	0.38 [0.15–0.92]	0.032∗	0.40 [0.18–0.89]	0.024∗
Age, per year	0.98 [0.95–1.02]	0.269	1.00 [0.97–1.03]	0.753
Female	1.18 [0.39–3.57]	0.768	1.20 [0.47–3.07]	0.700
Concentration disturbance	0.62 [0.24–1.61]	0.325	0.67 [0.29–1.55]	0.349
Chiari Severity Index, grade		0.326		0.573
2 vs. 1	0.61 [0.25–1.50]	0.283	0.78 [0.37–1.66]	0.521
3 vs. 1	0.35 [0.07–1.67]	0.187	0.50 [0.12–2.03]	0.332

CCOS, Chicago Chiari Outcome Scale; ED, emergency department.

^∗Statistically significant (P < 0.05).